NB669 NB669GQZ NB669GQ (AEVD) (Step Down) IC

Description

Key Features:

• The NB669 is a fully integrated DC-DC converter that includes a synchronous step-down (buck) regulator for fixed 5 V output, along with a 5 V linear regulator (LDO) for auxiliary loads.

• Input voltage range: 6.5 V to 24 V

• Output specifications:

  • Buck converter provides 5 V, up to 6 A continuous, with 9 A peak capability

  • LDO: 5 V, up to ~100 mA

• Operational topology: Constant‑On‑Time (COT) control for fast transient response

• Additional features:

  • 300 kHz clock output to drive external charge pumps

  • Internal soft-start

  • Output discharge function when disabled

• Protection features include:

  • Over‑current protection (cycle‑by‑cycle)

  • Over‑voltage protection

  • Under‑voltage protection

  • Thermal shutdown

  • Undervoltage lockout (UVLO) threshold at ~4.15 V

• Package: 16‑pin QFN, typically 3 × 3 mm

• The IC is considered “obsolete” / not recommended for new designs by the manufacturer

Please Note:

• No Returns, Exchanges, or Warranty available.

• Kindly verify the model number and ensure it matches your product before placing an order.

• We guarantee premium quality.

• All items are thoroughly inspected prior to shipping.